i think chris christie has a better profile for that than mitt romney did. they would like to see him run again. cory booker, 2016 might be a little soon for him to run. if he gets in the senate, he can serve out a term change and try again maybe 2020, 2024. >> ifill: i want to know what bruce springsteen has to say. whatever he says goes. thank you both. >> merry christmas. ifill: thank you. you can watch the first part of our discussion about the latest scramble for senate seats in two states. find that on our politics page. now to a pair of health stories and the important questions they've prompted. first a recent study on mammograms is reigniting a longstanding debate over the benefit of annual screenings. newshour health correspondent bete ann bowser has our report. >> reporter: last year after a routine mammogram detected two tiny breast cancers 56-year-old diane wright underwent a lumpectomy four months of chemotherapy and six weeks of radiation. >> i think i was devastated. i was surprised. i was shocked. i was overwhelmed by it all. >> reporter: wr